EXT4-fs (loop5): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x179e/0x1e20
Read of size 18446744073709550592 at addr ffff888104f24400 by task syz.5.2083/21817

CPU: 0 UID: 0 PID: 21817 Comm: syz.5.2083 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_report+0xba/0x230
 kasan_report+0x117/0x150
 kasan_check_range+0x264/0x2c0
 __asan_memmove+0x29/0x70
 ext4_xattr_set_entry+0x179e/0x1e20
 ext4_xattr_block_set+0x878/0x2ad0
 ext4_xattr_set_handle+0xe34/0x14c0
 ext4_xattr_set+0x255/0x340
 __vfs_setxattr+0x43c/0x480
 __vfs_setxattr_noperm+0x12d/0x660
 vfs_setxattr+0x163/0x360
 filename_setxattr+0x296/0x630
 path_setxattrat+0x3eb/0x440
 __x64_sys_lsetxattr+0xbf/0xe0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f184e79c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f184f645028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f184ea15fa0 RCX: 00007f184e79c799
RDX: 0000200000000000 RSI: 00002000000000c0 RDI: 0000200000000100
RBP: 00007f184e832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f184ea16038 R14: 00007f184ea15fa0 R15: 00007ffd38494e78
 </TASK>

Allocated by task 21817:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_node_track_caller_noprof+0x4db/0x7b0
 kmemdup_noprof+0x2b/0x70
 ext4_xattr_block_set+0x787/0x2ad0
 ext4_xattr_set_handle+0xe34/0x14c0
 ext4_xattr_set+0x255/0x340
 __vfs_setxattr+0x43c/0x480
 __vfs_setxattr_noperm+0x12d/0x660
 vfs_setxattr+0x163/0x360
 filename_setxattr+0x296/0x630
 path_setxattrat+0x3eb/0x440
 __x64_sys_lsetxattr+0xbf/0xe0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888104f24000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 0 bytes to the right of
 1024-byte region [ffff888104f24000, ffff888104f24400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104f20
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x17ff00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000040 ffff888100041dc0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
head: 017ff00000000040 ffff888100041dc0 dead000000000100 dead000000000122
head: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
head: 017ff00000000003 ffffea000413c801 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5679, tgid 5679 (dhcpcd), ts 44185337912, free_ts 44180730122
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x24dc/0x2580
 __alloc_frozen_pages_noprof+0x18d/0x380
 allocate_slab+0x77/0x660
 refill_objects+0x331/0x3c0
 __pcs_replace_empty_main+0x2e6/0x730
 __kmalloc_noprof+0x474/0x760
 load_elf_phdrs+0x13e/0x240
 load_elf_binary+0xa0f/0x2980
 bprm_execve+0x93d/0x1460
 do_execveat_common+0x50d/0x690
 __x64_sys_execve+0x97/0xc0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5553 tgid 5553 stack trace:
 __free_frozen_pages+0xc2b/0xdb0
 skb_release_data+0x6f0/0x940
 __kfree_skb+0x5d/0x210
 netlink_recvmsg+0x5d6/0xa50
 sock_recvmsg+0x172/0x1b0
 ____sys_recvmsg+0x1e6/0x4a0
 ___sys_recvmsg+0x215/0x590
 __x64_sys_recvmsg+0x1ba/0x2a0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888104f24300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888104f24380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888104f24400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff888104f24480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888104f24500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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